Chemistry - Hydrocarbon Question with Solution | TestHub
Halogenation is a substitution reaction, where halogen replaces one or more hydrogens of hydrocarbon.
Chlorine free radicals form 1°, 2°, and 3° radicals with almost equal ease, whereas bromine free radicals show a clear preference for the formation of tertiary free radicals. Therefore, bromine is less reactive and more selective, while chlorine is more reactive and less selective.
The relative rate of abstraction of hydrogen by Br• is:
3° > 2° > 1°
(1600) (82) (1)
The relative rate of abstraction of hydrogen by Cl• is:
3° > 2° > 1°
(5) (3.8) (1)
Major product in the above reaction is
Options:
Answer:
Solution:
Question Explanation: Identify the major product formed in a free-radical chlorination reaction using .
Concept: This question is based on free-radical halogenation and the selectivity of chlorination. Solution:
Of
Of
So A is major ⇒ (a)
Final Answer: Option (A)